Vulcanizer



June 23, 1931. T A MlLLER 1,811,276

VULCANI ZER Filed April 28, 1928 3 Sheets-Sheet l 'wf i a/ I l 1N VEN TOR. 77950005? A. /V/z` L E R BY @www ATTORNEYS June 23, 1931. T, A, M|| ER 1,811,276

VULCANIZER Filed April 28, 1928 3 Sheets-Sheet 2 INVENTOR. 7foooR A. /V/LLKR v A TTORNEYS T. A. MILLER June 23, 1931.

VULCANIZER Filed April 28, 1928 3 Sheets-Sheet 3 I. i\\\\\N\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\Y BY n@ ATTORNEYS j riinonoian A. MILLER, or AKRON, oi-iio,

Patented June 23, 1931 Vunirsi) STATES lPATENT OFFICE ASSIGNOR TO ANDREW J'. FLEITER, OF AKRON',

OHIO

VULCANIZER This invention relates to vulcanizers comprising relatively movable mating vulcanizer sections.

Heretofore, it has been proposed to pro- 1" vide a vulcanizer with relatively movable mold mating sections electromagnetically closed and held together during a curing operation. Such devices have, however, not been commercially feasible because of cerftain disadvantages, among which are occasional failure of the electrical power, permittingthe v ulcanizing sections to 'separate before a cure is completed, improper seating of the mold sections carried by the vulcanizer sections,and the liability of injury to workmeny by being caught between the vulcanizer sections by premature operation of the electromagnets. V

The purpose of the present invention is to provide an improved electromagneticallj7 operated vulcanizer which is so designed as to overcome the foregoing disadvantages and Uto becapable ofsi'mple, highly efficient operation in the, vulcanizationv of tire casings, ,inner tubes'and other rubbery articles. n

This application is a continuation in part of application Serial No. 111,782, filed May 26, 1926. f

The objects of the invention are atta-ined in thev various vulcanizer' constructions disclosed in the accompanying drawings and briefly described below. It is to be understood that the invention is-not limited to the `specific form thereofshown and described.

Of the accompanying drawings, V Figure 1 isa side elevation of a vulcanizer embodying the invention;

y Figure 2 is a front elevation thereof; lFigure 3 is a section Online 3/-3 of Fig- Figurel 4 isan enlarged detail section of the leftportion of Figure 3;

l Figure l5 is an elevation of the vulcanizer Icontrol device;

Figure 6 i a section through the control device;

Figure Y7 is a detail diametral section of a portion of a modified form of vulcanizer embodying the invention;

. Figure 8 is a side elevation of another 1928. Serial No. 273,684.

form of vulcanizer embodying the invention;

Figure 9 is a front elevation thereof; Figure 10 is a diagrammatic plan of a vulcanizer control switch and wiring; and

Figure 11 is a side elevation thereof. Referring to the drawings, the numeral 10 represents a suitable standard having mounted thereon a vulcanizer comprising mating sections 11 and 12, the latter hinged for movement toward and from the former on hinges 13,13.

Section 11 carries an inner tube mold section 14 and section 12 an inner tube mold sect-ion 15 arranged to mate with each other and having cavities for circulation of a curing medium as shown at 14a and 15a.

Vulcanizer section 11 is provided with electromagnets 2O and 21 about the outer and inner peripheries of mold section 14, these prises a rock shaft journaled on stationary vulcanizer sectionl 11 and operable by a vulcanizer locking lever 26 which carries a cam lug 27 for engaging a cam lug 28 on the outer side of the vulcanizer section 12 after the Vulcanizer sections have been moved into juxtaposition ready for curing an enclosed tube in the mold. Shaft 25 carries switch members 29, 29 for establishing a circuit through the electromagnets when the lever 26 is swung to locking position as shown, connecting the magnets to power lines 30, 80 as will appear from the diagrammatic wiring in Figure 4. Rock shaft 25 also carries a mold breaking or mold cracking cam lug 31 engaging a cam lug 32 on the vulcanizer section 12 to slightly separate the vulcanizer sections as the locking cams 27 and 28 are released by y yswinging lever 26 away from the locking position shown in the drawings.

To prevent actuation of the lever 2d while the vulcanizer sections are apart, section ll ,44and 45.v I Y. f"*Electromagnets46, 4

" vided oppositev eachother in `'the vulcanizer sections whereby by energizing thejmagnets vin the same direction, they will draw the secis provided with a spring pressed plunger 33 -in sockettherein normally urged outywardly'romA the Vtace of the vulcanizerand' engaging in back of a shoulder 34 oncam-Sl, this plunger beingV depressible out ofengagement with the shoulder 34 by the v'tace oi' section 12 when the-sections are closed to permit actuation of rock shaft 25 by lever 26.

In Figure 7 there are shown several features which may be employed fin' vulcani'zeis 'of this type .which `will Vbe of'particular advantage for 'certainpurposes A different linode of securing relative adjustment of mold and yvulcanizer'sectionsisshown. The mold sections v4O"a`nd` 4l'are secured to vulcanizer sections 42 and 43, 'the mold section 4() being adjustable on -vulcaniz'er section 42 by vscrews tions together, and, by reverselyenergi'zing th'e1nagnets," they Vwill urge'the 'sections apart.

This feature maybe employed instead of or vadditional t'o the breaking c am lug 31 on .rock

Y 'shaft 25.

In order to 'compensate 'for mi'salignment oi' the .vulcanizer sections `when Vswung into, )mating'relationship and magnetically locked, lsuch lasY would be 'causedby improper hinge action ofthe sections, lone ofthe sections,

suchasV 41 may be carriedvon afflexibleplate '4Gv capable of being 'flexed under the strong *magnetic'action to render rv ulcanizer Ysection A 43 self-adjusting.

Figures Sand 9 illustrate a safetyV latch 50 for securing together .magnetically actuated vulcanizerl sections 5l'and 52, thelat'ch being "pi'voted on section''l and arranged toengage a lug 53on`section 52and being adapted' to be released electrically by actuation of Va solenoidgcontrol'device 54. A v'suitable control "switch fon a vulcanizerequipped' with op- 'po'sed lvelectr'o magn'etsY and the electrically I' j controlledjl'atch is showniniFigures 9 and 10. A"d'ouble'throw switch isarranged'to energizemagn'ets 46 and 48 and 47 and 49 in the samedirection in one position the full line vposition shown) and toreversely energize magnets 46 and Y4'8`ancl47 and 49in' the other p ositionthereof, said 'switch being 'arranged to 'first engage' contacts '54a by establishing ya solenoid154as-the switch is swung to 4 vulcanizer opening position (dotted line position) 'whereby latch l`O'will be released 'circuit to before the velectroinagne"t's Vare energized to repeleach other too-pen the vulcanizer.

The simple, eligective Amanner for operat- 'ing 'and lcontrolling theoperation ofthe vaf-riousvulcanizersshown will be apparent trom and a shoulder on from the preceding description.V vModifications other than those disclosed herein may be resorted to without departing from the spirit of the invention or the scope of the appended claims. Vl/Vhat is claimed is :-y 1. The V'combination -with lrelatively movable vulcanizer sections and electromagnetic means yfor holding-said' sections together, of

mating mold sectionscarried by said vulcanizer sections, saidsections being adjustable Vrelative` to the vulcanizer sections to positions so as positivelyto seat upon eachother with the vvulcanizer sections having slight clearancebetween the faces thereof.

V2.Y The combination with relatively movable vulcanizer sections and electromagnetic means for holding the sections togethenof means for latching the sections together,and a 'switch 'actuatable Ybyengagement Vof said latching means to energize theelectromagneticmeans. 3. The combination with relatively movable vulcanizer sections and electromagnetic means for holding said sections together, of means operableV in one `direction 'forlocking the sec-tions together and fin anotherdirection to craclrthe sections, and a switch actuatable by' said vulcanizerlocliing orcracking means i'or energizing 'the electromagnets when the locking device i-s engaged-andffor cie-'energizing the electromagnets as Vthe locking device-is disengaged andthesection-s cracked. 1

4.- The.; combination" With' relatively movablevulcanizer sections and electromagnetic means =for holding.' the sections together, of -a loc king ydevice forxh'oldin'g the sections together, aswitch actuatable by engagement-of the locking device to energize the-electror-magnets, and :means operable lwhenthe vulcanizer yis "open `toifprevent actuation of the locking device, said means lcomprising a spring pressed `plunger `iin V:the 'face' of one vulcanizerv section' normally proj ectingtherethe locking device with with said shoulder'.V

5. The combination .with relatively movable Vvulcanizer sections and electromagnetic means 7tor holdingthe-v same" together Aduring a curing operation, ofmeans forenergizing the electromagnetic means, said energizing -mea-ns being Y locked against actuation -until the vulcanizersections are movedltogether.

6. The combination lwith relatively movable vulcanizer sections and electromagnetic means for holdingthe sametoge'therA during a vulcanizing operation, of a lockingdevi'ce forholding the sections together, meansactuated by engagement ofV thelocking Vdevice -'or energizing the electromagnetic'means, alvul- 'canizer cracking device operable by disenwhich said plunger engages, the plunger being depressible' by the face of the other vulcanizer section 'out'l of engagement against actuation when the vulcanizer is open by said vulcanizer cracking means.

8. The combination with hinged vulcanizer sections movable to and from mating relationship and electromagnetic means for holding the sections together, of means for locking the mold sections together, for energizing or de-energizing the electromagnetic means and for cracking the mold sections comprising a rock shaft having a locking cam lug thereon,

' a cracking -cam lug thereon and a switch thereon so as to be rocked in one direction to lock the sections and energize the electromagnetc means and to be rocked in the other direction to de-energize the magnetic means and crack the vulcanizer, and means for locking said rock shaft against actuation to energize the electromagnetic means when the vulcanizer is open.

9. The combination with hinged vulcanizer sections movable to and from mating relationship and electromagnetic means for holding the sections together, of means for locking the mold sections together, for energizing or cle-energizing the electromagnetic means and for cracking the mold sections comprising a rock shaft having a locking cam lug thereon, a cracking cam lug thereon and a switch thereon so as to bel rocked in one direction to lock the sections and energize the electromagnetic means and to be rocked in the other direction to de-energize the magnetic means and crack the vulcanizer.

,10. The combination with hinged vulcan izer sections movable to and from mating relationship and electromagnetic means for holding the sectionsftogether, of means for locking the mold sections together and for energizing or de-energizing the electromagnetic means comprising a rock shaft having a locking cam lug ther-eon and a switch thereon so as to be rocked in one direction to lock the sections and energize the electromagnetic means and to be rocked in the other direction to de-energize the magnetic means, and means for locking said rock shaft against actuation to energize the electromagnetic means when the vulcanizer is open.

11. The combination with hinged vulcaniz-er sections movable to and from mating relationship and electromagnetic means for holding the sections together, of means for locking the mold sections together and for energizing or de-energizing the electromagnetic means comprising a rock shaft having a locking cam lug thereon and a switch thereon so as to be rocked in one direction to lock the sections and energize the electromagnetic means and to be rocked in the other 'direction to de-energize the magnetic means.

l2. The combination with relatively movable vulcanizer sections and electromagnetic means for holding the sections together, of a locking device for holdin the sections t0- gether, a switch actuatabley engagement of the locking device to energize the electromagnets, and means operable when the vulcanizeris open to prevent actuation of the locking device.

13. A vulcanizer comprising hinged sections movable to and from mating relationship, and electromagnetic means for holding said sections together, one of said sections being mounted on a flexible element connected to one hinge member whereby the said section will adjust itself under the magnetic force to compensate for any misalignment of the vulcanizer sections.

14. A vulcanizer comprising relatively movable vulcanizer sections, electromagnetic means for urging the sections together or apart, and means for locking the sections together to prevent separation thereof due to failure of the electromagnetic means.

THEODORE A. MILLER. 

